fabfile.py

from fabric.api import *
from fabric.utils import abort
from fabric.contrib.project import rsync_project
from fabric.contrib.files import exists

env.hosts = ['igor@igor.io']

target_dir = '/var/www/igor.io'
backup_dir = target_dir+'-backup'
staging_dir = target_dir+'-staging'

def deploy():
    puts('> Cleaning up previous backup and staging dir')
    run('rm -rf %s %s' % (backup_dir, staging_dir))

    puts('> Preparing staging')
    run('cp -r %s %s' % (target_dir, staging_dir))

    puts('> Uploading changes')
    with cd(staging_dir):
        extra_opts = '--omit-dir-times'
        rsync_project(
            env.cwd,
            './',
            delete=True,
            exclude=['.git', '*.pyc'],
            extra_opts=extra_opts,
        )
    
    puts('> Switching changes to live')
    run('mv %s %s' % (target_dir, backup_dir))
    run('mv %s %s' % (staging_dir, target_dir))

def rollback():
    if exists(backup_dir):
        puts('> Rolling back to previous deploy')
        run('mv %s %s' % (target_dir, staging_dir))
        run('mv %s %s' % (backup_dir, target_dir))
    else:
        abort('Rollback failed, no backup exists')